Classification
006 - Special computer methods
794
658 - General management
755
330 - Economics
637
004 - Data processing & computer science
427
005 - Computer programming, programs & data
420
610 - Medicine & health
401
616 - Diseases
397
370 - Education
359
300 - Social sciences
307
302 - Social interaction
276
100 - Philosophy & psychology
258
150 - Psychology
258
612 - Human physiology
230
158 - Applied psychology
214
700 - The arts; fine & decorative arts
207
900 - History & geography
186
155 - Differential & developmental psychology
183
320 - Political science
175
000 - Computer science, information & general works
170
306 - Culture & institutions
169
331 - Labor economics
163
500 - Natural sciences & mathematics
161
650 - Management & auxiliary services
160
153 - Mental processes & intelligence
157
152 - Perception, movement, emotions & drives
140
620 - Engineering & allied operations
140
333 - Economics of land & energy
136
380 - Commerce, communications & transportation
122
621 - Applied physics
120
140 - Specific philosophical schools
117
301 - Sociology & anthropology
110
600 - Technology
105
384 - Communications; telecommunication
102
304 - Factors affecting social behavior
98
305 - Social groups
89
338 - Production
89
363 - Other social problems & services
89
381 - Commerce
82
670 - Manufacturing
80
170 - Ethics
79
400 - Language
75
332 - Financial economics
72
371 - Schools & their activities; special education
66
800 - Literature & rhetoric
65
613 - Personal health & safety
60
303 - Social processes
56
340 - Law
54
618 - Gynecology, obstetrics, pediatrics & geriatrics
54
745 - Decorative arts
51
200 - Religion
50
more ...